private static void Skill_PropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
SkillControl o = (SkillControl)obj;
o.Update();
o.startingRank = ((Skill)args.NewValue).Rank;
}
private static void LinkedCharacteristicValue_PropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
SkillControl o = (SkillControl)obj;
o.Update();
}